William gtjrley



(no Modem W. GURLEY. LEVELING 3,01),

Patented Oct, 23

do, My inientiion relates to irnprovements in.

20 lower section, for indicating the height of the 5 on the upper end parts oi't-wo or more of the WILLIAM GURLEY, on TROY, NE

p w YORK, nss renon TO HIMSELF AND LEWIS E. 'GURLEY, it I OF SAME Lemon.

LevELiNeoo- SPECIFICATION forming part of Letters Patent No. 2127,021, dated October .23, ises.

' Applicniion fllcd September 1'! 1888. (X model.) i

, 2'0 all uihom it may concern: Be it lliown that 1, WILLIAM GURLEY', a citizen of the United States, residing in the citynof Troy, in the county of ltensselaerand 5 State of New York, have invented certain new xand useful Improvements in Leveling-Rods, of which the following is a specification, referenee beinghad to the accompanying drawings.

extensio leveling-rods for use by civil engineers anti surveyors. Such, extension-rods are generally composed of two rods fitted to slide lengthwise one upon the other, andfnr- I 5 nished with a sliding target, and graduated to about twelve or thirteen feet when fully extended and to about six or seven feetwhen closed, and with one index and ernier on the target and another on the upper part of the target when fastened on the more or less ex tended upper section of the m1.- On such rods the index and vernier on the upper part of the lower section are so high above the eyes of the rodnian that to'accnratcly inspect and read the gradnations by'th index and render when the rod is extended he must first turn d ow n or greatly incli no the whole extended rod. The general object of my lid provemcnts is to avoid that great practical de-s feet and. produce a more compact and portable and easily-operated leveling-rod, which shall have the generally required capability of being extended to about twelve or thirteen" feet, and which willallow a rodman of lowjor' connnon height to road with case and accuracy the grnduations and the indications of the verniers on the upper parts of the lower sections oi'thc rod while the rod is'cxtcnded and re- 0 mains inthe upright or perpcndicular position in whichit is used. 1 accomplish that Object by making a leveling-rod in tllrceo'rn oresec tions adapted to he slid lengthwise upon one another, and with heads or lateral projections sections, and graduated and fniaiished with a sliding target and with clamping devices,

substantially asdiereinal'ter described, and

represented in the aforesaid drawings" in; whicha Figure 1- is aside elevation of 'a' leveli I rod'having four slides, (shown closed,) and; embodying one form of all the parts of my in-' vcntion. Fig. 2 is an isometrical view. of the' same rod on a larger scale, showing the upper and lower end parts of all the slides when fully or partlyextended, but not showing long.in-.

tervening portions. Figs. 3, 4, and 5 are enlarged sections of the closed rod shown in Fig.

1, the sections being taken at the lines zz, my, and a: m, respectively. Fig. 6 .is a side. elevation 5; a leveling-rod having-three slides, (shown 'oliisexhl) and embodying one fOl'lil oil,- the principal parts of my invention. Figz-T is an isometrical drawing, on a larger scalc,,of the leveling-rodshown in Fig. 6, with'all the slides closed and the middle parts of the slides removed. Fig. 8 is an isolnet-rical view of the top and bottom parts of the sanieleveling-rod,

with the target fastened to the head of 'asome-"yo, what extended slide and the otIlier slides chided; Fig. 9 is an isometrical vienlof parts, of the same rod extended,th e target andmain upper portion of one ihlly-extem'led slide and the middle parts of. the other slides being all removed; Figs. 10 andll are enlarged sections of the closed rod shown in Fig. 6, the

sections'be'ing at the linesnv w and v c. Fig.

12' is a lengthwise sectioifof the upper end part of some-of the slides of the same rods, thesection'being at the line a a in Figs. 1 and 6; --Fig. 13 is alcngthwisc section of parts oi thesame leveling-rods, taken at the lines 1! t in Figs. 2 and 9..

,A, B, and Care three slides or rodseon 85. neet-ed together by dovetail tongues and i grooves, as represented in the drawings, so that thc'part A can he slid to and fro lengthwise on'thc part B, and that the part B can he slid to and fro along the part 0; but as regards my invention the rodsA B Ccan bccounccted to slide" along one another by means ol'any suitable known equivalents for the dovetailtongues and grooves. The sliding rod B'has a head or part, b, above and extending over the ion of the rod 0, and the sliding rod A.

has a head or part, a, extending over the top of the rod B and its head -b, as clearly shown in the drawings.

recessed tongue and groove, so' that the rod D is a target In the leveling-rod represented by Figs. 1, 2,3, 4, and the rod or slide 0 is composed of two rods, 0 0 connected by a dovetail or G can be slid lengthwise on the rod G", and

the rod C has a head or part, 0, extending '10.

011s heights upon the rod when its parts A, B,

and O are closed together, as shown in Figs. 1, 6, and 7, and to be clamped fast to the head a on the rod A, above the rods B and C, as

1 shown in Figs. 2 and 8.

The slide A is furnished with a clamp, E, constructed and arranged to fasten that slide at'various heights along the slide Band to the head b of that slide, as indicated by Figs; 1,

' 2,3, 6,7, 8, 9, 10, and I- furnish the slide B with aclamp, F, for fastening that slide at different heights along the part 0, as shown by Figs. 1, 2, '4, 6, 7, 8, 9, 11.

In the leveling rod represented by Figs. 1, 2,3, 4, 5 the slide 0 is furnished with a clamp, G, formed and arranged to fasten the slide 0 at varlons'heights along and upon the part 0, as indicated by Figs. 1, 2, and 5. The graduations start on the face of the rod, at its lower end, and I commonly make them in feet, tenths, and hundredths, and have verniers to read thousandths, asillustrated in the drawings, or in meters, decimeters, and centimeters,- with verniers to read mil limeters, or in feet, inches, and sixteenths. When the slides are all closed and the target D is slid along the rod,"as in Figs. 1, 6, and 7, the height of the target is shown on the face of the'rodby the target-index and Vernier, which in Fig. 7 indicates 3.685 feet. When the rod is closed. as in Fig. 7, and,

thctarget D is clampedt'o the slide A at the end of the divisions. on the face of the rod, as "at 4.8 in Fig. 7, the index and vernier at e on the side of slide B indicate the same is shown on the graduation's on the side of height by the graduations on the side of slide A as in Fig. 7, and while only the slide'A,

,withthe target Dthus fast thereon, is extended as i-nFig. 8, the height of theta'rget the slideA' by the indexand Vernier e, which in Fig. 8 indicate 5.200 feet. When the slide A, with the target D clamped to its head, as in Figs. 2 and 8, is extended and fastened by its clamp E to' the head ofs'lide B, as in Figs. 2 and 9, and the slide B is partially extended, as in Fig. 9, the height of the target is shown on the graduations on the side of the slide B by the index and verni'er f, on the part 0, which index and Vernier indicate 9.185 feet in Fig. When I'constr'uct the "65,

part 0 of the two rods :0 C as shown in' Figs. 1, 2, 3,4, 5, and the targetD is clamped to the head on slide A, as in Fig. 2, and the In Fig. 7, his .a spring-catch fastened to the part a, over a recess therein, and constructed and arranged to' engage with the side d of the target-slide, as shown in Figs.

2 and 8, when the target is at the end of the graduations on the face of the rod, and so that the catch h can be depressed by hand to permit the target to be removed from and replaced upon the rod whenever necessary.

In Figs. 1, 6, 12, and 13, 'i is astop in the upper end part of the slide B and of slide 0 in Fig. 1, and j is a spring-catch secured to the lower end part of the slide A and of slide B in Figs. 1 and 4, and constructed and arranged, in respect to the graduations and index-lines 0n the slides, so that the target D can be freely slid over the stop or stops 5,.

and that the catch j engages with the corresponding stop, 1', as indicated in Fig. 13, when the slide A is extended to the right degree to be fastened by the clasp E to the head of the 1. An extension leveling-rod composed of the slides A, B, and C, graduated, and having the'head a and clamp E on slide A, the head b and clamp F on slide B, and the target D, furnished with a clamp, 11, and fitted to be fastened to the head of slide A andat various heights on the rod when all the slides are closed together, substantially as-described.

' 2. A leveling-rod composed of the slides A, B, and C, graduated, and having the head a and clamp E on slide A, the head b and clamp F on slide B, the part 0 composed of the graduated slides C C, with a head, 0, and

clamp G on slide 0, and a target, D, furnished with a clamp, (I, and fitted to be fastened tQQthehead of slide A and at various points along the rod when all thcslides' areclosed, substantially as set forth.

catch j on slide A, the head I), clamp F, and

'3. A leveling-rod composed of the slides I A, B, and C, graduated substantially as described, and having the head a, clamp E, and

sto t on slide B, and the target D, furnished I I 957,021 s uated substantially as described, and having "In testimony whereof I hereunto set my the head a furnished with the spring-eateh h hand, in the presence of two subseribingwiton the extension-slide A, and the target. D, nesses, this 12th day of September, 1883. v furnished with the clamping-slide d d, and \VILLIAM GURLEY. 5 fitted to be fastened to the head a on slide A Vitness'es:

and at various places along the rod when its HENRY A. KENNEY, slides are closed, substantially as set forth. PAUL 000K. 

